Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.11889/3996
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rayyan, Saleh | |
dc.contributor.author | Fossen, Torgils | |
dc.contributor.author | Nateland, Harvard Solheim | |
dc.contributor.author | Andersen, Oyvind M. | |
dc.date.accessioned | 2017-01-03T08:33:38Z | |
dc.date.available | 2017-01-03T08:33:38Z | |
dc.date.issued | 2005 | |
dc.identifier.uri | http://hdl.handle.net/20.500.11889/3996 | |
dc.description.abstract | Twelve flavonoids, including seven flavones, four flavonols and one flavanone, were isolated from methanolic extract of the herbal drug ‘Crataegi folium cum flore’ (hawthorn leaves and flowers) by a combination of CC (over Amberlite XAD-7 and Sephadex LH-20) and preparative HPLC. Their structures, including that of the novel flavonol 8-methoxykaempferol 3-O-(6″-malonyl-β-glucopyranoside), were elucidated by homoand heteronuclear NMR and electrospray/MS. The 1H- and 13C-NMR of all compounds, including rotameric pairs of five flavone C-glycosides, were assigned. The presence and relative proportion of each rotamer was shown by various NMR experiments, including two-dimensional nuclear Overhauser and exchange spectroscopy, to depend on solvent, linkage position and structure of the C-glycosyl substituent. | en_US |
dc.language.iso | en | en_US |
dc.subject | Materia medica, Vegetable - Analysis | en_US |
dc.subject | Flavonoids - Spectra | en_US |
dc.subject | Flavonoids - Therapeutic use | en_US |
dc.subject.lcsh | Hawthorns | |
dc.title | Isolation and identification of flavonoids, including flavone rotamers, from the herbal drug ‘Crataegi Folium Cum Flore’ (Hawthorn) | en_US |
dc.type | Article | en_US |
newfileds.department | Science | en_US |
newfileds.item-access-type | open_access | en_US |
newfileds.thesis-prog | none | en_US |
newfileds.general-subject | Natural Sciences | العلوم الطبيعية | en_US |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | other | - |
item.grantfulltext | open | - |
Appears in Collections: | Fulltext Publications |
Files in This Item:
File | Description | Size | Format | |
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Isolation and identification of flavonoids including flavone 2005.pdf | 191.69 kB | Adobe PDF | View/Open |
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